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G. H. NASH.

Music-Leaf Turner. No. 224,943. Patented Fe b.24,1880.

4 Sheets-Sheet 3.

G. H. NASH. Music-Leaf Turner. No. 224,943. Patented Feb. 24,1880.

4 Sheets-Sheet 4.

G. H. NASH. Music-Leaf Turner.

No. 224,943. Patented Feb. 24,1880.

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. m uiiii UNITED STATES PATENT OFFICE.

MUSIC-LEAF TURNER.

SPECIFICATION forming part of Letters Patent No. 224,943, dated February24, 1880.

Application filed May 15, 1879.

To all whom it may concern:

Be it known that I, GEORGE HARRY NASH, of Birmingham, in the county ofWarwick, England, have invented a certain Improved Apparatus for TurningOver the Leaves of Music, to be called the Volti Subito, of which thefollowing is a specification.

This invention has for its object the construction of a simple andefficient-apparatus for turning over the leaves of music.

In the accompanying drawings, Figure 1 is a front elevation, Fig. 2 aback elevation, and Fig. 3 a plan, of my improved apparatus, the variousparts being in the position they occupy when the apparatus is not inuse. Fig. 4 is a front elevation, Fig. 5 a plan, and Fig. 6 an end view,of the apparatus, showing the parts in the position ready to turn overthe leaves of music; Fig. 7, an end view, showing the position of theparts when a leaf is being carried over; Figs. 8 and 9, detachedelevation and plan of one of the arms for carrying over the leaves; Fig.10, perspective view, on a small scale, of the improved apparatus.

Similar letters in all the figures represent similar parts.

The improved apparatus is constructed of a suitably-shaped metal plate,a, provided at the back with a clamp, b, and thumb-screw c, forattaching it to the music desk or stand. Near one end of the plate a,and at the top and bottom thereof, I fix or form projecting brackets dd, forming hearings to carry a vertical arbor or shaft, 0, on which worka number of eccentries or cams, f, placed one above the other, each ofsuch eccentrics carrying a horizontal arm, g, made of wire, the innerends of such arms being turned down at right angles at 9', so as to beriveted or otherwise fixed to a projection, f, on its correspondingeccentric f, each of such projections f being shorter than the one nextbelow it, as shown, to allow the vertical ends g of the wire arms gtopass one another when the arms 9 turn, as hereinafter described. Theouter ends, of the wire arms are turned up vertically, and are providedwith suitable spring-clips h, for holding the leaves of music to heturned.

To the front of the hereinbeforedescribed metal plate a I fix a curvedspring, t, formed of sheet-steel, German silver, or other suitablemetal, and having a number of blades, j, corresponding to the number ofthe hereiubeforedescribed eccentrics f, the free ends of these bladespressing against the back part of the eccentrics, so as to always tendto move them (and consequently the wire arms) from the right-hand sideto the lefthand side of the apparatus.

The right-hand end of the hereinhefore-described plate is formed with anangle or return end, It, having a horizontal slot, 1, in the same planewith the horizontal wire arms g, and above this slot Z is pivoted aslotted spring catch or detent, m, the nose on of the said catch ordetent, when in its normal position, extending across the front of thesaid horizontal slot, as shown in Fig. 6, and the tail end, m of thiscatch extends underneath the back part of the slot 1 in the end plate,75. Under the catch is a bell-crank-shaped lever, a, pivoted at itsupper end, 0, to the said end plate, 70, and provided at its lower end,19, with a projecting arm or trigger, q, for operating the bell-crankedlever a. This lever has a projection, a, for raising the catch at, andanother projection, 11?, for preventing more than one arm from turningat one time, as hereinafter described.

On the left-hand end of the hereinbet'oredescribed metal plate I form aslotted guide, 1, for receiving and holding the wire arms 9 as they turnover the leaves of music, and behind the vertical shaft 0, carrying theeccentrics f, I fix a square pin or upright, s, on which is placed adevice for holding the back of the music.

I will now describe the action of my improved apparatus: The apparatusbeing fixed to a music stand or desk, Fig. 10, by means of its clamp band screw 0, and the back of the piece of music 0, Fig. 10, placed inthe open clips, the leaves of the piece of music to be turned over areplaced in the clips h of the wire arms g, and the arms are moved intothe slot 1 in the end plate, 70, and will be held in the slot by thecatch or detent m, as shown in Fig. 6, the eccentrics f of the arms 9compressing the blades j of the spring t, as shown in Fig. 5, so as tokeep the blades in tension. When a leaf is to be turned the arm ortrigger q of the bell-crank lever is lightly pressed with the finger,and the projection n on the said bell-crank lever will be pressedagainst the tail end, m of the catch, the catch will be raised, as shownin Fig. 7, and will release the first wire arm, which will be turned orcarried over, by the recoil of its spring acting on the eccentric of thearm, into the hereinbefore-described slotted guide 1', the arm in itsmovement carrying with it the first leaf of music. When the catch israised to release the arm the projection or catch n on the bell-crankedlever is brought, as shown in Fig. 7, in front of the next arm, so thatonly one arm is re leased at a time, and, the pressure being removed,the catch is broughtback to its normal position by its spring 2, asshown in Fig. 6, ready to release the next arm when required, and so onfor all the arms.

In the drawings I have shown the apparatus provided with six arms-thatis to say, a number of arms suflicient for turning oy er six leaves ofmusic; but it will be understood that a larger number of arms may beemployed, if required; and in Fig. 7 two of the arms have been carriedover and the third (marked A) is in the act of turning.

The eseapement arrangement for holding and releasing the arms isapplicable for other purposes-such as, for example, for throwingmachinery out of gear.

Having thus described my said invention and ea: g the same into effect,I wish it to be um oustood that I do not confine myself to the precisedetails herein laid down and shown in the drawings, as the same may bevaried without departing from the peculiar character of my invention;but

What I do claim isl. The described apparatus for holding back the leavesof music, the same consisting of the supporting-frame, the set or seriesof arms severally provided with a cam piece or pertion,f, the set ofsprings j, and the parts an a and slot Z, these parts operatingsubstantially as described.

2. The described escapement devices, the same consisting of the slot Zin the plate, the slotted spring catch or dei'ent m, and bellcrankedlever n, for holding and releasing the arms, as described and shown.

GEORGE HARRY NASH.

Witnesses WILLIAM HENRY EDWARDS,

Bromsgrovc Street, Birminglmm. JOHN STANFIELD CLARK,

12 llfary Street, Balsall Heath,

Birminghmn.

best means I am acquainted with for 0

